Hydro-Air System's Nest Thermostat Wiring Lacks 'Auto' Fan Option
In hydro-air systems, the absence of an "Auto" fan option in the wiring for a Nest thermostat can be attributed to several factors. One possibility is that the system lacks the necessary wiring or configuration to support this feature. Another reason could be compatibility issues between the thermostat and the system's control board. It's essential to consult the thermostat's user manual and verify compatibility with the hydro-air system. Additionally, contacting a licensed HVAC technician can provide further insights and assistance in resolving the issue.